Hmm... I didn't take into account that people would use function keys...
/unbind F7 (Unbinds a bound key (sets it to default)).
If the default action is not desired, use: /bind keyname "nop"
*sigh*
Steiner... these are binds created by default by the game. F7 through F10. Various little "Ready!", Looking for team, and the battlecry.
When Issue 13 hit and they did the overhaul to allow for copy and paste, they did some weird things so that character encoding doesn't work correctly. This is more obvious when importing from the file.
If you still want the green bubble, try re-entering the bind by hand.
/bind F7 "say <color black><bgcolor #22aa22> Ready!"
'Say' will make it come out on the active chat channel.